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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 14, Problem 11E
Textbook Problem
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Write equations for respiration and photosynthesis. For each reaction, label the substances that are oxidized and reduced. Why are these reactions important?

Interpretation Introduction

Interpretation:

The equations for respiration and photosynthesis are to be written, and the substances that are oxidized and reduced in both the reactions are to be labelled, and the importance of the two reactions is to be explained.

Concept Introduction:

Oxidation is the addition of an electronegative element or the removal of an electropositive element in the chemical reaction.

Reduction is the addition of an electropositive element or the removal of an electronegative element in the chemical reaction.

The chemical reaction in which oxidation and reduction take place simultaneously is called a redox reaction.

An oxidizing agent is a substance that has the capacity to oxidize the other substance and get reduced in the chemical reaction.

A reducing agent is a substance that has the capacity to reduce the other substance and get oxidized in the chemical reaction.

Explanation of Solution

The chemical equation for the photosynthesis reaction is as follow.

6CO2+6H2OC6H12O6+6O2

An oxidizing agent gains electron easily and a reducing agent loses electrons easily in a chemical reaction.

6C+4O22+6H2+1O2C60H12+1O62+6O20

In this chemical reaction, the oxidation state of H2O is increased from 2 to 0 and the loss of electrons occurs. Therefore, H2O is the reducing agent or it gets oxidized in the photosynthesis reaction.

In this chemical reaction, the oxidation state of CO2 is reduced from +4 to 0 and the gain of electrons occurs. Therefore, CO2 is the oxidizing agent or it gets reduced in the photosynthesis reaction.

The chemical equation for the respiration reaction is as follow:

C6H12O6+6O26CO2+6H2O

An oxidizing agent gains electron easily and a reducing agent loses electrons easily in a chemical reaction

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Chapter 14 Solutions

Chemistry In Focus
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